InfiniBand* is supported by Intel(R) MPI Library for Windows* OS through the DAPL fabric, so DAPL libraries need to be installed. DAPL is included into OpenFabrics* winOFED* and available to choose during installation. But if a vendor's OFED installed you will probably need to install the DAPL package addtionally.

Please check that you have needed libraries:

C:\>dir /B %SYSTEMROOT%\System32\dapl2-ND.dlldapl2-ND.dll

C:\>dir /B %SYSTEMROOT%\System32\dat2.dlldat2.dll

Also check that IP addresses are set for corresponding IP-over-IB adapters. For example,